4 Replies Latest reply on May 4, 2018 8:53 AM by warner

    Threadripper & Linux: CPU spikes and high system utilization

    panoscc

      My problems with threadripper are not easy to describe.

       

      Quite often I experience CPU usage spikes (high system CPU utilization) and my system locks for a few milliseconds. Videos and UI are a bit choppy.

       

      Other times, CPU intensive tasks that used to be fast now take too much time. For example linking executables (using GCC) takes quite a lot of time. Writing to USB sticks is also magnitudes slower than what I remember.

       

      The weird thing is that my problems get worst after waking up from suspend (to RAM).

       

      Anyone else experiencing similar issues? Or do you have any idea how to debug these issues? Thank you in advance.

       

      - I’ve tried many kernel versions (up to 4.15.2) and nothing seems to help.

      - I’m booting using Legacy mode (UEFI is disabled from bios).

      - Apart from CPU+mobo+ram+PSU my workstation is the same as my older setup that used to work fine. Same HDDs, SSDs, GPU, software

      - pcie_aspm is off because of PCIe bus errors (many people have those)

      - Motherboard: Gigabyte AORUS Gaming 7 with the latest bios (F3g)

      - CPU: Threadripper 1950x

      - RAM: Corsair Vengeance LPX Black DDR4 PC25600/3200MHz CL16 2x16GB

      - GPU: Geforce 760

      - OS: Ubuntu 17.10 64bit.